Gas-engine carbureter.



J. P.. MILLER. GAS ENGINE GARBURETBR.

APPLICATION FILED SEPT. 21, 1911.

1,097,089, Patented May 19, 1914.

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.russa F. MILLER, o :e ALBANY, NEW YORK.

eas-ENGINE CARBURETER.

l'specAnimation of Letters Patent.

appncanon mea september 21, 1911. serial No. esofee. v

To all 'whom it may concern I Be it known that I JESSE F.- MILLER, ag; Citizen of the United states, residing at Al-i bany, in the county of Albany and State of; New York, havel invented certain .new and. useful Improve-ments in Gas-Engine Carb'u-4 reters, of which the following is a specification, referencebeing had therein to,the 'accompanying drawing.

This invention relates to improvements in y gas engine carbureters, andl has for-its ob ject the provision of improyed means for in i suring a thorough mixture ofthe air and as. i g Heretofore in this art, it hasbeen the general custom to employ Vas part of a carbureter, a jet opening through which the gasolene is'drawn and mixed with the air in a carbureting chamber coincident with the drawing in of the air adjacent to said jet opening. By such an arrangement, it quite frequently occurs that the desired saturation' of the air with the gasolene is not effected.

As distinguished from such a method, it is the aim of thepresent improvementsto compel the air to pass through the gasoleneso as' to-` take up and mix with the Vlatter in its course to and through a. carbureting chamber, therei by to substantially preventany portion of the air entering the engine in its relatively' pure or unmixed condition.

Improved details in the construction and arrangement of the several parts of a practical embodiment of my invention will be apparent from the detail description hereinafter contained when read in connection with the accompanying drawings forming lpart I. hereof and wherein the preferred embodiment of the invention is illustrated for the sake of imparting'a full understanding of t-he invention. l

In the drawings, Figure 1 is avertical sectional view through the'carbureter, Fig. 2 is across section on line ,a2- w of Fig. 1; and

Fig. 3 is a detail view.

Referring more specifically to the drawings, whereinlike reference characters refer to corresponding parts in the several views, A 'represents'a gasolene chamber adapted to receive its supply through themedium of a pipe B, conveniently detachably coupled to and leading from any suitable source of supply not necessary to be herein illustratedfor example, the usual gasolene tank of ai motor vehicle. C is the carbureting chamber into which n the desired quantities of gasolene and air feed for the purpose of securing the desired mixture ultimately supplied the engine through the medium of'packing h, a hollow screw rod I threaded into the casting G as at i at its lower end 'and passing through the cap H where it is engaged outside of the cap by a nut 271, clamping the parts together. The lower end of the hollow rod I is formed with a valve seat 7' to coperate with a valve J normally opening to a globular portion g of the cast-ing G receiving gasolene through -the pipe B 'and having a screwplugg lat its lower end toenable the cleaning of the valve and permitting discharge of sediment, etc.

The valve J is controlled by means of a float K sleeved for vertical play upon the rod I and adjustable in weight through the medium of ring-like weights -c secured upon the upper end of the cork vbody lportion vThe float is connected to the stem of the valve J through the medium of a pin k secured to the bottom of the oat and assin'g through the stem je 'of the valve andt rough vertically disposed slots 1:2 in the rod I. The

lcasting G has a horizontally disposed stein L formed therewith, the same being hollow and communicating-with an outlet opening Z. at the bottom of the gasolenechamber E,

the endof the 'stem being provided with an apertured flange Z coperating with a similar flange m on a corresponding stem M to secure these parts together 'by means of nuts and 'bolts m. p' The stem M is also hollow and in alinement with the stem L -to constitute the gasolene inlet to the carbureting chamber now to be described.'

The carburetingchamber comprises a lower vcasting N peripherally open at its central portion as at O, save 'for the-bridging portions n and formed in its lbase with a cylindrical seat P opening through` the medium of passages p tothe inlet M. Seated within the seat `P and extendin0r upwardly a substantial distance beyond the opening O is a closely rolled body ofK gauze Q, pref- Patented May 19, 1914.

erably formed by winding up a sheet of brass gauze or other suitable wire cloth or porous material (brass gauze being preferable) after the fashion of a roll of ribbon,

5 the Whole assuming cylindrical formation and constituting a reticulated barrier across the inlet for air O and through which the air must pass to the chamber R Within an upper casting S, bolted as at s to the lower Casting N.

fitted within the throat t of the upper casting S of the carbureter, and to adjust the intake of gasolene in consonance with the adjustmentof the throttle valve, I coperatively associate therewith the following valve controlling means, to wit: The junction between the inlet stem M and the passages ;0 comprises a vertical hollow portion of the casting N, represented at U, the same being -interiorly threaded as at u to receive a correspondingly exteriorly threaded plug V manually adjustable by means of a knurled head on the outer end thereof o. The plug just referred to has a tapering interior portion at its inner end o communicating with lateral apertures c2 adapted to register with the passage in the stem M. Bythe adjustment ofthe plug V the same operates as a valve to close or open, partially or otherwise, communication between the inlet M and the passages p, suitable packing means u preventing escape to the exterior around the plug valve.

Working within the tapering interior portion o of the plug which in the present par- I 410ticular itself constitutes a valve seat, is an elongated conical valve W pivotally connected to the throttle valve T through the medium of a link w hinged at its lower end as at w to the stem of the valve W and at its upper end as at t to the throttle valve T at one side of the pivotal point t2 of the latter. By this arrangement, it will be appreciated that an adjustment of the throttle to control the amount of mixture admitted to the engine will simultaneously shift the valve W to adjust the amount of gasolene fed to the carbureter. The inner wall p of the annular seat P extends upwardly a substantial distance on the interior of the casing N, to a point beyond the upper edge of the air inlet opening O to compel the air to travel vertically through the gauze body Q, through which it takes up the gasolene in the passage of both through the carburet- A ing chamber.

Withk an understanding of the detailed construction hereinabove outlined, the operation of the carbureter will probably be apparent, but it may be here observed that G5 normally the parts are so adjusted that gasolene will pass through the source'of supply into the oat chambery A and from thence into the lower portion of the carbureter C until the float actuated lvalve closes the gasolene inlet to maintain a gasolene level appronimatelj' on the line, so indicated in Fig. l, which is somewhatbelow the lower edge of the air opening O. The float is adjusted through the medium of the weights in the manner hereinbefore described to secure the automatic opening and closing of the valve in maintaining the level referred to. The gasolene is taken up by capillary action throughout the gauze body Q, so that the air when sucked in by the action of'the engine, through the air opening O is compelled to pass through the gasolene saturatedgauze and thus in turn becomes thoroughly saturated in its passage to the chamber R and prior to its escapeto the engine, the adjustment of the amount of gaseous mixture escaping and the adjust-ment of the gasolene admitted to the carbureter being simultaneously effected as previously discussed.

By my improved construction, I have furnished in a simple and comparatively inexpensive device, a. carbureter which secures advantageous and satisfactory results'. In use, it will be understood that the device is not only applicable to motor vehicles, but is equally useful in connection with gas engines generally.

' A characteristic of my improved carbureter is the safety against back-firing. It is a matter of quite general knowledgev that the greater percentage of automobile fires are started from impro-per mixture back-tiring through the carbureter, setting re to gasolene, oil, etc., in the panVv under the engine. This is provided against in my carbureter because, even if the mixture should get out of balance, it is impossible for the fire in the cylinders and in-take pipe to pass back lthrough the carbureter owing to the intervening bridge of gauze through which it is impossible for flame to pass.

wWhile I have, in the foregoing specica- I tion, referred particularly to gasolene, I desire it understood that thc carbureter is useful not only in connection with gasolene,but also other volatile fuels.

I claim:

1. A carbureter comprising a casing, having a gas outlet leading therefrom, and a seat therein, said casing being provided with an air port and a passage for gasolene leading thereinto at points below the gas outlet, and a relatively thick compact body formed entirely of metal gauze tting in the seat of the casing and directlyoverlying and completely covering the openings of the gasolene and air passages, said gauze being adapted to take up the gasolene by capillary action.

2. A gas engine carbureter, comprising a casing, provided with agas outlet in the upV per portion thereof, a seat around the outer Wall of the casing and positioned in the lower part of said casing, said casing being provided with a fuel port communicating with said seat and with an airport in the side wall thereofadjacent'said seat, and a. body foi-ined of closely associated layers of Wire gauze fitting Within the seat in the casing and directly overlying said air and fuel passages.

3. A gas engine carburetor, comprising a casing provided with a gas outlet i-n the upper portion thereof, andwith a seat in the' lower portion thereof around the outer Wall of the casing, said casing being provided.

with a fuel port communicating with said seat and with an air port in the outer wall thereof adjacent said seat, said seat being provided with an inner cylindrical wall extending upwardly above the ports in the wall of the casing, and a cylinder of rolled gauze itting Within the seat in the casing and directly overlying said air and fuel ports.

In testimony whereof I affix my signature in presence of two Witnesses.

JESSE F. MILLER- Witnesses:

DAVID H. WALSH, S. A. SMrrii. 

